Open jdbc connections with CMP entity beans

Hi,
Seem to always have open connections (generally about half those that have been opened) when using CMP beans. How can i make sure these get closed when my app is finished with them ??
Thanx
Rosie

Similar Messages

Use direct JDBC with CMP entity bean in one transaction

I am trying to use direct JDBC call with CMP entity bean within a session
bean method that requires transaction. The problem is that it appears these
are not in the same transaction. When I use the JDBC call, the CMP entity
bean update to the DB has not been committed yet.
We are using Weblogic 5.1 SP6. The DB is Oracle.
What I do for the JDBC is get a new connection from the pool using weblogic
jdbc pool driver.
Any help would be appreciated.
Patrick

Hi. You can do JDBC and invoke CMP EJBs and have this all treated
as one transaction, if your hand-written code explicitly starts
a JTS transaction, then uses the jts driver or a TxDataSource to
get the JDBC connection. Then your code can call transactional
EJBs and their work will be included in the transaction you started.
Assuming the bean work went OK, and your manual JDBC went OK, you
can manually commit the UserTransaction at that time. This is 5.1
talk. For 6.0, with @PC, this may be even easier...
Joe
Patrick Shen wrote:
>
But if I do that, then they would not be in the same transaction anymore.
Is there any way to use JDBC with CMP Entity bean in the same transaction?
Patrick
"L'artiste" <[email protected]> wrote in message
news:[email protected]...
Are you calling all the CMP create in the session Bean ? If so, beforeyou
make the JDBC call from the session bean, the CMP in 2. should commit. Try
to set its attribute to TX_REQUIRES_NEW. This way, the calling client will
block until this transaction is done (committed) before the execution
continues. There might be some overhead involved in doing so if you are
anticipating a lot of users.
"Patrick Shen" <[email protected]> wrote in message
news:[email protected]...
What I am trying to do is:
In a Session bean method -
1. create a new CMP entity bean (a new row in DB table)
2. create another new CMP entity bean that uses previous bean as foreignkey
3. use JDBC to update the row just created
And all these 3 calls have to be in one transaction.
Thanks,
Patrick
"L'artiste" <[email protected]> wrote in message
news:[email protected]...
Can you give a little bit more information?
Do you have methods in your session bean that creates this CMP entitybeans?
It looks like
you might wanna try to change the isolation level to
TRANSACTION_READ_COMITTED
to preven dirty_read.
"Patrick Shen" <[email protected]> wrote in message
news:[email protected]...
I am trying to use direct JDBC call with CMP entity bean within a
session
bean method that requires transaction. The problem is that it
appears
these
are not in the same transaction. When I use the JDBC call, the CMP
entity
bean update to the DB has not been committed yet.
We are using Weblogic 5.1 SP6. The DB is Oracle.
What I do for the JDBC is get a new connection from the pool usingweblogic
jdbc pool driver.
Any help would be appreciated.
Patrick
PS: Folks: BEA WebLogic is expanding rapidly, with both entry and advanced positions
for people who want to work with Java, XML, SOAP and E-Commerce infrastructure products.
We have jobs at Nashua NH, Liberty Corner NJ, San Francisco and San Jose CA.
Send resumes to [email protected]

What are the necessary elements in ejb-jar.xml with CMP entity bean

What are the necessary elements in ejb-jar.xml with CMP entity bean
Actually i am using webligic 8.1 and while deployment getting the error that
some elements r missing
Thanks
Anand Pritam

According to the ejb-jar.xml dtd ejb-name, ejb-class, persistence-type, prim-key-class, reentrant are the required elements for an entity bean.
<!ELEMENT entity (description?, display-name?, small-icon?,
          large-icon?, ejb-name, home?, remote?, local-home?,
          local?, ejb-class, persistence-type, prim-key-class,
          reentrant, cmp-version?, abstract-schema-name?,
          cmp-field*, primkey-field?, env-entry*, ejb-ref*,
          ejb-local-ref*, security-role-ref*, security-identity?,
          resource-ref*, resource-env-ref*, query*)>

Can't Update with CMP entity bean (psi-ri)

Hello!
Has anybody got entitybeans to work thorougly with psi-ri -persistence provider?
Our entities Insert and Delete as they should be, but we haven't got them to Update anything.
I have a feeling that this has something to do with transactions, but I haven't found any answers yet.
All help is more than appreciated
Petri Valto
null

yes, Entity beans with psi-ri works fine. In fact I have written a couple of them which is fine.

Little Help with CMP Entity Bean

I have the following error:
--- MBEANS THAT ARE THE ROOT CAUSE OF THE PROBLEM ---
ObjectName: jboss.j2ee:service=EjbModule,module=SISEPROEJB.jar
State: FAILED
Reason: org.jboss.deployment.DeploymentException: Atleast one role of a
foreign-key mapped relationship must have key fields (or <primkey-field> is
missing from ejb-jar.xml): ejb-relation-name=Abogado-to-AdmninistrativoI have two entity beans called abogado and adminsitrativo, the relation is abogado-has-many-adminitrativo, (one-to-many)
Here is my xdoclet code in abogado:
         * @ejb.interface-method
         * @ejb.relation
         *    name="Abogado-to-Administrativo"
         *    role-name="Abogado-has-many-Administrativo"
         *    target-ejb = "Administrativo"
         *    target-role-name = "Administrativo-has-one-Abogado"
         * @jboss.target-relation related-pk-field = "userName"
         *    fk-column = "UserName_id_fk"
         * @return Collection de procesos administrativos
         public abstract Collection getProcesos();Here is the xdoclet code for administrativo
         * @ejb.interface-method
         * @ejb.relation name="Abogado-to-Admninistrativo"
         *    role-name="Administrativo-has-one-Abogado"
         *    target-ejb="Abogado"
         *    target-role-name="Abogado-has-many-Administrativo"
         *    target-multiple="true"
         * @return
         public abstract AbogadoLocal getAbogado();Both beans have pk fields defined with:
     * @ejb.persistence column-name = "id"
     * @ejb.pk-fieldand
     * @ejb.interface-method
     * @ejb.persistence column-name = "UserName"
     *     sql-type="VARCHAR"
     * @ejb.pk-fieldPlease help me I have been stuck here for the whole weekend.
Thanks
Daniel Castro

Try the following forum (about EJB technology)
http://forum.java.sun.com/forum.jspa?forumID=13

Problem in creating CMP Entity Bean - Pls Help

I am trying to build one simple project having jsps to get connected to CMP Entity Bean.
But while deploying I am getting the following error...
Nov 15, 2004 10:59:09... Info: End of log messages of the target system.
Nov 15, 2004 10:59:09... Info: ***** End of SAP J2EE Engine Deployment (J2EE Application) *****
Nov 15, 2004 10:59:09... Error: Execution of deployment action for "EntityCMPAppln" aborted:
Caught exception during application deployment from SAP J2EE Engine's deploy service:
java.rmi.RemoteException: Error occurred while starting application bcone.com/EntityCMPAppln and wait.
Reason: Complex error : server ID 6155350:Application bcone.com/EntityCMPAppln cannot be started, because it has hard reference to resource CONFIG_DB with type javax.sql.DataSource, but it is not active on the server.
(message ID: com.sap.sdm.serverext.servertype.inqmy.extern.EngineApplOnlineDeployerImpl.performAction(DeploymentActionTypes).REMEXC)
Nov 15, 2004 10:59:09... Error: Deployment NOT successful for EntityCMPAppln
Nov 15, 2004 10:59:09... Info: SDM configuration: Do not automatically start/stop J2EE Engine. Do not restore state of J2EE Engine now.
Nov 15, 2004 10:59:09... Error: -
At least one of the Deployments failed -
Nov 15, 2004 11:05:16... Info: Request for Logon as admin accepted
===========================================
Nov 15, 2004 11:05:08... Info: =   Starting to execute command 'remotegui'   =
Nov 15, 2004 11:05:08... Info: ===============================================
Nov 15, 2004 11:05:10... Info: SDM started successfully.
Please tell me how to activate the CONFIG_DB reference in database. Or what Extra I have to do to run this example.
Regards,
Vivek Ojha

Dear Benny,
The code of the required files is pasted below....
Application.XML
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE application PUBLIC "-//Sun Microsystems, Inc.//DTD J2EE Application 1.3//EN"
                             "http://java.sun.com/dtd/application_1_3.dtd">
<application>
    <display-name>EntityCMPAppln</display-name>
    <description>EAR description</description>
    <module>
        <ejb>EntityCMPEjb.jar</ejb>
    </module>
    <module>
        <web>
            <web-uri>EntityCMPWeb.war</web-uri>
            <context-root>/student</context-root>
        </web>
    </module>
</application>
Application-j2ee-engine.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE application-j2ee-engine SYSTEM "application-j2ee-engine.dtd">
<application-j2ee-engine>
     <provider-name>bcone.com</provider-name>
     <fail-over-enable
          mode="disable"/>
</application-j2ee-engine>
data-source-aliases.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE data-source-aliases SYSTEM "data-source-aliases.dtd">
<data-source-aliases>
     <aliases>
          <data-source-name>${com.sap.datasource.default}</data-source-name>
          <alias>STUDENTDB</alias>
     </aliases>
</data-source-aliases>
ejb-j2ee-engine.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE ejb-j2ee-engine SYSTEM "ejb-j2ee-engine.dtd">
<ejb-j2ee-engine>
     <enterprise-beans>
          <enterprise-bean>
               <ejb-name>StudentBean</ejb-name>
               <resource-ref>
                    <res-ref-name>jdbc/STUDENTDB</res-ref-name>
                    <res-link>STUDENTDB</res-link>
               </resource-ref>
               <entity-props/>
          </enterprise-bean>
     </enterprise-beans>
</ejb-j2ee-engine>
ejb-jar.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE ejb-jar PUBLIC "-//Sun Microsystems, Inc.//DTD Enterprise JavaBeans 2.0//EN" "http://java.sun.com/dtd/ejb-jar_2_0.dtd">
<ejb-jar>
     <description>EJB JAR description</description>
     <display-name>EJB JAR</display-name>
     <enterprise-beans>
          <entity>
               <ejb-name>StudentBean</ejb-name>
               <home>com.bcone.ejb.StudentHome</home>
               <remote>com.bcone.ejb.Student</remote>
               <ejb-class>com.bcone.ejb.StudentBean</ejb-class>
               <persistence-type>Container</persistence-type>
               <prim-key-class>java.lang.String</prim-key-class>
               <reentrant>False</reentrant>
               <cmp-version>2.x</cmp-version>
               <abstract-schema-name>StudentBean</abstract-schema-name>
               <cmp-field>
                    <field-name>studentId</field-name>
               </cmp-field>
               <cmp-field>
                    <field-name>lname</field-name>
               </cmp-field>
               <cmp-field>
                    <field-name>standard</field-name>
               </cmp-field>
               <cmp-field>
                    <field-name>fyear</field-name>
               </cmp-field>
               <cmp-field>
                    <field-name>fname</field-name>
               </cmp-field>
               <primkey-field>studentId</primkey-field>
               <resource-ref>
                    <res-ref-name>jdbc/STUDENTDB</res-ref-name>
                    <res-type>javax.sql.DataSource</res-type>
                    <res-auth>Container</res-auth>
               </resource-ref>
          </entity>
     </enterprise-beans>
</ejb-jar>
persistent.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE persistent-ejb-map SYSTEM "persistent.dtd">
<persistent-ejb-map>
     <locking
          type="Table"/>
     <db-properties>
          <data-source-name>CONFIG_DB</data-source-name>
          <database-vendor
               name="SAPDB"/>
     </db-properties>
     <entity-beans>
          <entity-bean>
               <ejb-name>StudentBean</ejb-name>
               <table-name>TMP_STUDENTNEW</table-name>
               <field-map
                    key-type="PrimaryKey">
                    <field-name>studentId</field-name>
                    <column>
                         <column-name>STUDENTID</column-name>
                    </column>
               </field-map>
               <field-map
                    key-type="NoKey">
                    <field-name>lname</field-name>
                    <column>
                         <column-name>LNAME</column-name>
                    </column>
               </field-map>
               <field-map
                    key-type="NoKey">
                    <field-name>standard</field-name>
                    <column>
                         <column-name>STANDARD</column-name>
                    </column>
               </field-map>
               <field-map
                    key-type="NoKey">
                    <field-name>fyear</field-name>
                    <column>
                         <column-name>FYEAR</column-name>
                    </column>
               </field-map>
               <field-map
                    key-type="NoKey">
                    <field-name>fname</field-name>
                    <column>
                         <column-name>FNAME</column-name>
                    </column>
               </field-map>
          </entity-bean>
     </entity-beans>
     <relationships/>
</persistent-ejb-map>
StudentBean.java
package com.bcone.ejb;
import javax.ejb.EntityBean;
import javax.ejb.EntityContext;
import javax.ejb.RemoveException;
import javax.ejb.CreateException;
@abstractSchemaName StudentBean
@cmpVersion 2.x
@ejbHome <{com.bcone.ejb.StudentHome}>
@ejbPrimaryKey <{java.lang.String}>
@ejbRemote <{com.bcone.ejb.Student}>
@hasSimplePK true
public abstract class StudentBean implements EntityBean {
     public void ejbLoad() {
     public void ejbStore() {
     public void ejbRemove() throws RemoveException {
     public void ejbActivate() {
     public void ejbPassivate() {
     public void setEntityContext(EntityContext context) {
          myContext = context;
     public void unsetEntityContext() {
          myContext = null;
     private EntityContext myContext;
@primKeyField
     public abstract String getStudentId();
     public abstract void setStudentId(String studentId);
     public abstract String getLname();
     public abstract void setLname(String lname);
     public abstract String getFname();
     public abstract void setFname(String fname);
     public abstract String getStandard();
     public abstract void setStandard(String standard);
     public abstract String getFyear();
     public abstract void setFyear(String fyear);
Create Method.
     public String ejbCreate(
          String studentId,
          String fname,
          String lname,
          String standard,
          String fyear)
          throws CreateException {
          setStudentId(studentId);
          setFname(fname);
          setLname(lname);
          setStandard(standard);
          setFyear(fyear);
          return null;
Post Create Method.
     public void ejbPostCreate(
          String studentId,
          String fname,
          String lname,
          String standard,
          String fyear) {
          // TODO : Implement
StudentData.java
Created on Nov 14, 2004
To change the template for this generated file go to
Window>Preferences>Java>Code Generation>Code and Comments
package com.bcone.data;
@author Administrator
To change the template for this generated type comment go to
Window>Preferences>Java>Code Generation>Code and Comments
public class StudentData {
     private String studentId;
     private String fname;
     private String lname;
     private String standard;
     private String fyear;
@return
     public String getFname() {
          return fname;
@return
     public String getFyear() {
          return fyear;
@return
     public String getLname() {
          return lname;
@return
     public String getStandard() {
          return standard;
@return
     public String getStudentId() {
          return studentId;
@param string
     public void setFname(String string) {
          fname = string;
@param string
     public void setFyear(String string) {
          fyear = string;
@param string
     public void setLname(String string) {
          lname = string;
@param string
     public void setStandard(String string) {
          standard = string;
@param string
     public void setStudentId(String string) {
          studentId = string;
student.jsp
<%@ page language="java" %>
<html>
     <head>
          <title>
               Title
          </title>
     </head>
     <body>
          <form method="POST" action="WEBBOT-SELF" name="Student" onSubmit="">

<br>
<a href="/student/manageStudent.jsp?action=add" method="post"> Create </a>
<a href="/student/manageStudent.jsp?action=modify" method="post"> Modify </a>
<a href="/student/manageStudent.jsp?action=delete" method="post"> Delete </a>
<br><br>
<table border="1" width="32%">
    <tr>
      <td width="39%">Student ID </td>
      <td width="61%"><input type="text" name="studentId" size="20"></td>
    </tr>
    <tr>
      <td width="39%">First Name</td>
      <td width="61%"><input type="text" name="fname" size="20"></td>
    </tr>
    <tr>
      <td width="39%">Last Name</td>
      <td width="61%"><input type="text" name="lname" size="20"></td>
    </tr>
    <tr>
      <td width="39%">Standard</td>
      <td width="61%"><input type="text" name="standard" size="20"></td>
    </tr>
    <tr>
      <td width="39%">Fiscal Year</td>
      <td width="61%"><input type="text" name="fyear" size="20"></td>
    </tr>
    <tr>
      <td width="39%" align="center"><input type="submit" value="Submit" name="submit"></td>
      <td width="61%" align="center"><input type="reset" value="Reset" name="reset"></td>
    </tr>
</table>
</form>
     </body>
</html>
mamageStudent.jsp
<%@ page language="java"
import="javax.naming.,java.sql.,javax.sql,com.bcone.ejb."
%>
<html>
     <head>
          <title>
               Manage Student
          </title>
     </head>
     <body>
          <h1>
          </h1>
<jsp:useBean id="stu" class="com.bcone.data.StudentData" ></jsp:useBean>
<jsp:setProperty name="stu" property="*" />
<%
try {
     InitialContext ctx = new InitialContext();
     StudentHome home = (StudentHome) ctx.lookup("java:comp/env/StudentBean");
     String str = request.getParameter("action");
     if("action".equals(str)) {
          Student rem = home.create(remote.setFname(stu.getStudentId(),stu.getFname(),stu.getLname(),stu.getStandard(),stu.getFyear());
          out.println(stu.getStudentId() + "Student Created");
     } else if ("modify".equals(str)) {
          Student remote = home.findByPrimaryKey(stu.getStudentId());
          remote.setFname(stu.getFname());
          remote.setFname(stu.getLname());
          remote.setFname(stu.getStandard());
          remote.setFname(stu.getFyear());
          out.println(stu.getStudentId() + "Student modified");
     } else if ("delete".equals(str)) {
          Student stu1 = home.findByPrimaryKey(stu.getStudentId());
          stu1.remove();
          out.println(stu.getStudentId() + "Student deleted");
} catch (Exception e) {
     out.println("Exception e"+e.toString());
%>
     </body>
</html>
Regards,
Vivek Ojha

RE: Consuming and Creating a CMP Entity Bean

Hi There,
I have been trying to find an answer for 1 day. I don't know ehre to look next.
I am creating a CMP entity bean. I have created all the set and get mehtods as abstract functions. I have added a ejbCreate and a matching ejbPostCreate. The class code looks like this.
public abstract class COrderBean implements EntityBean {
     protected EntityContext entctx;
     //abstract declarations of property accessors
     public abstract int getId();
     public abstract void setId(int intid);
     public abstract String getCustomerID();
     public abstract void setCustomerID(String strcustomerid);
     public abstract Date getDate();
     public abstract void setDate(Date datorder);
     public abstract String getNotes();
     public abstract void setNotes(String strnotes);
     public void ejbActivate() {}
     public void ejbPassivate() {}
     public void ejbRemove() {}
     public void ejbLoad() {}
     public void ejbStore() {}
     public void setEntityContext(EntityContext context)
          entctx = context;
     public void unsetEntityContext()
          entctx = null;
     public COrderPK ejbCreate()
          return null;
     public COrderPK ejbCreate(int new_id, String new_customerid, Date new_order_date, String new_notes) throws CreateException
          setId(new_id);
          setCustomerID(new_customerid);
          setDate(new_order_date);
          setNotes(new_notes);
          return new COrderPK(getId());
     public void ejbPostCreate(int id, String customerid, Date order_date, String notes) {}
My client code works with both BMP entity beans and session beans. It is shown below. I am working with Sun's Application Server 8.0 and I created the database schema with the capture-schema.exe command.
Properties prps = new Properties();
          props.put("javax.rmi.CORBA.UtilClass","com.sun.corba.ee.impl.javax.rmi.CORBA.Util");
          props.put("org.omg.CORBA.ORBClass","com.sun.corba.ee.impl.orb.ORBImpl");
          props.put("org.omg.CORBA.ORBSingletonClass","com.sun.corba.ee.impl.orb.ORBSingleton");
          Context context = new InitialContext(props);
          Object obj = context.lookup("corbaname:iiop:localhost:3700#COrderBean");
          //Object obj = context.lookup("entitybean.OrderItem");
               IOrderHome home = (IOrderHome)PortableRemoteObject.narrow(obj,Class.forName("ctaejb.entitybean.order.IOrderHome"));
               //use create
               IOrderRemote remote = home.findByPrimaryKey(new COrderPK(1));
               System.out.println(remote.getDate().toString());
I am getting the follwing error. Can someone please help. Thanks in advance.
WARNING: "IOP00810257: (MARSHAL) Could not find class"
org.omg.CORBA.MARSHAL: vmcid: SUN minor code: 257 completed: Maybe
     at com.sun.corba.ee.impl.logging.ORBUtilSystemException.couldNotFindClass(ORBUtilSystemException.java:7987)
     at com.sun.corba.ee.impl.encoding.CDRInputStream_1_0.read_value(CDRInputStream_1_0.java:1013)
     at com.sun.corba.ee.impl.encoding.CDRInputStream.read_value(CDRInputStream.java:259)
     at com.sun.corba.ee.impl.io.IIOPInputStream.inputObjectField(IIOPInputStream.java:1989)
     at com.sun.corba.ee.impl.io.IIOPInputStream.inputClassFields(IIOPInputStream.java:2213)
     at com.sun.corba.ee.impl.io.IIOPInputStream.inputObject(IIOPInputStream.java:1221)
     at com.sun.corba.ee.impl.io.IIOPInputStream.simpleReadObject(IIOPInputStream.java:400)
     at com.sun.corba.ee.impl.io.ValueHandlerImpl.readValueInternal(ValueHandlerImpl.java:330)
     at com.sun.corba.ee.impl.io.ValueHandlerImpl.readValue(ValueHandlerImpl.java:296)
     at com.sun.corba.ee.impl.encoding.CDRInputStream_1_0.read_value(CDRInputStream_1_0.java:1034)
     at com.sun.corba.ee.impl.encoding.CDRInputStream_1_0.read_value(CDRInputStream_1_0.java:879)
     at com.sun.corba.ee.impl.encoding.CDRInputStream.read_value(CDRInputStream.java:255)
     at com.sun.corba.ee.spi.servicecontext.UEInfoServiceContext.<init>(UEInfoServiceContext.java:30)
     at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
     at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
     at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
     at java.lang.reflect.Constructor.newInstance(Constructor.java:494)
     at com.sun.corba.ee.spi.servicecontext.ServiceContextData.makeServiceContext(ServiceContextData.java:114)
     at com.sun.corba.ee.spi.servicecontext.ServiceContexts.unmarshal(ServiceContexts.java:195)
     at com.sun.corba.ee.spi.servicecontext.ServiceContexts.get(ServiceContexts.java:365)
     at com.sun.corba.ee.spi.servicecontext.ServiceContexts.get(ServiceContexts.java:353)
     at com.sun.corba.ee.impl.protocol.CorbaClientRequestDispatcherImpl.processResponse(CorbaClientRequestDispatcherImpl.java:470)
     at com.sun.corba.ee.impl.protocol.CorbaClientRequestDispatcherImpl.marshalingComplete(CorbaClientRequestDispatcherImpl.java:327)
     at com.sun.corba.ee.impl.protocol.CorbaClientDelegateImpl.invoke(CorbaClientDelegateImpl.java:158)
     at com.sun.corba.ee.impl.presentation.rmi.StubInvocationHandlerImpl.invoke(StubInvocationHandlerImpl.java:129)
     at com.sun.corba.ee.impl.presentation.rmi.bcel.BCELStubBase.invoke(Unknown Source)
     at ctaejb.entitybean.order._IOrderHome_DynamicStub.findByPrimaryKey(_IOrderHome_DynamicStub.java)
     at mainapp.CTestApplication.main(CTestApplication.java:32)
Caused by: java.lang.ClassNotFoundException
     ... 27 more
org.omg.CORBA.UNKNOWN: vmcid: 0x0 minor code: 0 completed: Maybe
     at com.sun.corba.ee.spi.servicecontext.UEInfoServiceContext.<init>(UEInfoServiceContext.java:34)
     at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
     at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
     at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
     at java.lang.reflect.Constructor.newInstance(Constructor.java:494)
     at com.sun.corba.ee.spi.servicecontext.ServiceContextData.makeServiceContext(ServiceContextData.java:114)
     at com.sun.corba.ee.spi.servicecontext.ServiceContexts.unmarshal(ServiceContexts.java:195)
     at com.sun.corba.ee.spi.servicecontext.ServiceContexts.get(ServiceContexts.java:365)
     at com.sun.corba.ee.spi.servicecontext.ServiceContexts.get(ServiceContexts.java:353)
     at com.sun.corba.ee.impl.protocol.CorbaClientRequestDispatcherImpl.processResponse(CorbaClientRequestDispatcherImpl.java:470)
     at com.sun.corba.ee.impl.protocol.CorbaClientRequestDispatcherImpl.marshalingComplete(CorbaClientRequestDispatcherImpl.java:327)
     at com.sun.corba.ee.impl.protocol.CorbaClientDelegateImpl.invoke(CorbaClientDelegateImpl.java:158)
     at com.sun.corba.ee.impl.presentation.rmi.StubInvocationHandlerImpl.invoke(StubInvocationHandlerImpl.java:129)
     at com.sun.corba.ee.impl.presentation.rmi.bcel.BCELStubBase.invoke(Unknown Source)
     at ctaejb.entitybean.order._IOrderHome_DynamicStub.findByPrimaryKey(_IOrderHome_DynamicStub.java)
     at mainapp.CTestApplication.main(CTestApplication.java:32)

Forget it. All the code works. I didn't know that the Sun App Server required a Persistence Manager to work with CMP entity beans. Once I added the persistence manager, all was OK. Have a good day.

Create CMP Entity Beans from Tables Wizard - Can't see any tables with DB2

Hi,
I'm trying to use the "Create CMP Entity Beans from Tables Wizard" to create an entity from a table in a DB2 database. The problem is, on page 2, I can't see any available tables. I have verified that the connection works (I can open the connection in the Navigator frame and I can see that table).
Note that if I try this wizard on an Oracle database, I can see tables.
WTF? Can someone please help?

I second the motion. I too work in an environment with centralized data management (DBA's) that create and maintain all tables under a generic schema. This has prevented me from using the Create Entity Beans from Table feature of Jdev r3 preview.
At least I can see that I'm not alone.
Thanks
When I select the "Create CMP Entity Beans from Tables Wizard," no tables or views are available to select. The JDev database connection is using an ID assigned to me.
The tables that I am looking for were created by the DBA under his ID and are therefore in that schema. He did create Public Synonyms for them, but the tables still do not show up in the wizard.
Is there a configuration step that I need to do to have those tables show up?
Tables created by a DBA and then accessed by developers using a public synonym is a very common scenario and should be supported by JDeveloper (IMO).
Thanks.
I'm using JDev 9.0.2.8.2.

How to use same transaction when calling CMP entity beans and DAO (JDBC)

We are currently using Weblogic 8.1 SP2 with an Oracle 10g database (using XA thin and non-XA drivers).
We have a session bean that invokes an entity bean and a DAO (data access object pattern) in order to add data in 2 separate tables (account and history). Rows are added to the first (account) table using a CMP Entity bean while inserts are done in the 2nd (history) table using a DAO. Here is some pseudo code:
addHistorySessionBean (trans-attribute="Required")
begin
Step #1 - call addAccountEntityBean (trans- attribute="Required")
Step #2 - call addHistoryDAO (get datasource, connection)
end
The 2nd table (history) has a foreign key constraint to ensure that the corresponding key exists in the first (account) table. Unfortunately, DAO inserts on the 2nd (history) table fail with a foreign key constraint violation (INTEGRITY CONSTRAINT VIOLATION - PARENT KEY NOT FOUND!) since they cannot see the row added to the 1st (account) table in step #1 by the CMP entity bean.
How does one ensure that all this is done in a single transaction ? It appears that the app server creates two seperate transactions (one for the session bean facade and the entity bean and a 2nd transaction (when we retrieve a connection using the same data source JNDI name) for the DAO.
A post on server side suggested using a "<resource-ref>" in the session bean to tie the two potentially separate transactions together, but that does not work for us. However, I am not sure if we are doing that correctly. After we define the resource ref in the session facade bean, do we use the resource ref "name" attribute to lookup the datasource or do we still lookup the datasource by JNDI name ? Do we need to define the resource-ref tag in the entity bean also ?
Does Weblogic allow using a single transaction for this type of a scenario ? How does one specify within Weblogic that the same transaction should be utilized by the entity bean and any subsequent DAOs?
People have also suggested that we defer constraint checking until the transaction(s) are committed but that sounds like a work acount without addressing this issue. Would postponing the constraint checking in Oracle cause any additional overhead ?
Any suggestions with specific examples or documentation on how to address this issue will be gratefully appreciated.

Thanks for your suggestion. Unfortunately, this does not work since it appears that there are 2 separate transactions going on here. One, the original one initiated by the session bean and used by the entity bean and the other initiated by the DAO. Any other ideas appreciated.
Hi,
Try setting the delay-database-inserts tag to
ejbCreate in RDBMS descriptor file.
http://bernal/stage/wls/docs81/ejb/DDreference-cmp-jar
.html#1113981
vasanthi ramesh

CMP Entity Bean with ejb-ql finder methods and INFORMIX database

Hi,
I have some CMP Entity Beans with finder methods defined in ejb-ql. In my ejb-jar, within <entity> definitions I have something like:
    <entity>
      <abstract-schema-name>BeanName</abstract-schema-name>
      <cmp-field><field-name>fieldOne</field-name></cmp-field>
      <cmp-field><field-name>fieldTwo</field-name></cmp-field>
      <query>
        <query-method>
          <method-name>findAll</method-name>
          <method-params></method-params>
        </query-method>
        <ejb-ql>SELECT OBJECT(o) FROM BeanName o</ejb-ql>
      </query>
    <entity>
And in persistent.xml:
<db-properties>
     <data-source-name>datasource_name</data-source-name>
</db-properties>
<entity-bean>
     <ejb-name>BeanName</ejb-name>
     <table-name>table_name</table-name>
     <field-map key-type="NoKey">
     <field-name>fieldOne</field-name>
     <column><column-name>column_one</column-name></column>
      </field-map>
     <field-map key-type="NoKey">
     <field-name>fieldTwo</field-name>
     <column><column-name>column_two</column-name></column>
      </field-map>
      <finder-descriptor>
          <method-name>findAll</method-name>
          <method-params/>
     </finder-descriptor>
Once deployed, on server side, I can found a java source file (with corresponding compiled class file) in path:
j2ee/cluster/server0/apps/companyName/MyEARApp/EJBContainer/temp/temp38837373733/route/to/package/
with names:
BeanName0_0pm.java
BeanName0_0PM.class
and the generated java file contains this code:
public java.util.Enumeration ejbFindAll() throws javax.ejb.FinderException, javax.ejb.EJBException {
    TransactionContext tc = pm.getTransactionContext();
    Connection conn = null;
    PreparedStatement pSt = null;
    ResultSet ejb_rs = null;
    int status = javax.transaction.xa.XAResource.TMSUCCESS;
    try {
      conn = pm.getConnectionForFindMethod();
      pSt = conn.prepareStatement("SELECT \"O\".\"COLUMN_ONE\",\"O\".\"COLUMN_TWO\", FROM \"TABLE_NAME\" \"O\"");
      ejb_rs = pSt.executeQuery();
I'm trying to call this method but it throws a SQLException when preparing the statement.
It seems that Informix does not like this SQL syntax because of upper case names, doble quotes on table alias, or something else.
When editing persistent.xml in netweaver, I can define the element <datasource-vendor> as ORACLE, SAPDB, MS_SQL_SERVER, DB2_UDB_AS400 or DB2_UDB_OS390 but INFORMIX is not an accepted value.
Is there any way to define how this SQL query is build?
Thanks in advance.

The return type of the finder method defined in the remote home interface is either the entity bean's remote interface or a collection of objects implementing the entity bean's remote interface. The return type of the finder method defined in the local home interface is either the entity bean's local interface or a collection of objects implementing the entity bean's local interface

ORA-01407 when removing a CMP Entity Bean with WLS 9.1

Hi all !
I hope you can help me to solve this ?:|
I'm migrating my application from WLS 8.1 SP3 to WLS 9.1.
I'm getting now an SQLException when I try to remove a CMP Entity Bean.
The stacktrace is as follows:
java.sql.SQLException: ORA-01407: cannot update ("USER"."MY_TABLE"."THE_CMR_FIELD") to NULL
     at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:145)
     at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:331)
     at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:288)
     at oracle.jdbc.driver.T4C8Oall.receive(T4C8Oall.java:743)
     at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:216)
     at oracle.jdbc.driver.T4CPreparedStatement.executeForRows(T4CPreparedStatement.java:1120)
     at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1278)
     at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3415)
     at oracle.jdbc.driver.OraclePreparedStatement.executeUpdate(OraclePreparedStatement.java:3498)
     at weblogic.jdbc.wrapper.PreparedStatement.executeUpdate(PreparedStatement.java:128)
Of course, I replaced the table and column names above to be more readable ;-)
The table MY_TABLE has a CMR field called THE_CMR_FIELD. The column is not nullable in the database (by the way, it's an Oracle 9i).
Everything is fine under WLS8.1
I tried two different Oracle JDBC drivers (9.2.0.5 and 10.2.0.1.0), but the result is always the same within WLS9.1.
Any ideas or suggestions (or even questions) are more than welcome!
Thanks
Eric

What's even more weird is that I have what seams to be the same problem on Weblogic 6.1 (SP4).
Here's the stacktrace:
<pre>
javax.ejb.EJBException:
Start server side stack trace:
java.sql.SQLException: ORA-01407: cannot update ("SCHEMA"."TIM_WP_DAY_CORE_PERIODS"."TWD_ID") to NULL
     at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:134)
     at oracle.jdbc.ttc7.TTIoer.processError(TTIoer.java:289)
     at oracle.jdbc.ttc7.Oall7.receive(Oall7.java:573)
     at oracle.jdbc.ttc7.TTC7Protocol.doOall7(TTC7Protocol.java:1891)
     at oracle.jdbc.ttc7.TTC7Protocol.parseExecuteFetch(TTC7Protocol.java:1093)
     at oracle.jdbc.driver.OracleStatement.executeNonQuery(OracleStatement.java:2047)
     at oracle.jdbc.driver.OracleStatement.doExecuteOther(OracleStatement.java:1940)
     at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:2709)
     at oracle.jdbc.driver.OraclePreparedStatement.executeUpdate(OraclePreparedStatement.java:589)
     at com.p6spy.engine.logging.P6LogPreparedStatement.executeUpdate(P6LogPreparedStatement.java:183)
     at weblogic.jdbc.jts.Statement.executeUpdate(Statement.java:503)
     at package.WorkPatternDayCorePeriods_vd9y46__WebLogic_CMP_RDBMS.__WL_store(WorkPatternDayCorePeriods_vd9y46__WebLogic_CMP_RDBMS.java:2317)
     at weblogic.ejb20.manager.DBManager.flushModified(DBManager.java:438)
     at weblogic.ejb20.internal.TxManager$TxListener.flushModifiedKeys(TxManager.java:552)
     at weblogic.ejb20.internal.TxManager.flushModifiedBeans(TxManager.java:298)
     at weblogic.ejb20.manager.BaseEntityManager.flushModifiedBeans(BaseEntityManager.java:1246)
     at weblogic.ejb20.cmp.rdbms.RDBMSPersistenceManager.flushModifiedBeans(RDBMSPersistenceManager.java:1106)
     at weblogic.ejb20.manager.BaseEntityManager.cascadeDeleteRemove(BaseEntityManager.java:840)
     at weblogic.ejb20.manager.DBManager.remove(DBManager.java:656)
     at weblogic.ejb20.internal.EntityEJBLocalObject.remove(EntityEJBLocalObject.java:97)
     at package.WorkPatternDayCorePeriodsEJB_vd9y46_ELOImpl.remove(WorkPatternDayCorePeriodsEJB_vd9y46_ELOImpl.java:722)
     at package.PersonWorkPatternBC.removeWorkPatternDay(PersonWorkPatternBC.java:571)
     at package.remove(PersonWorkPatternBC.java:708)
     at package.TimPersonCalendarServiceEJB.removeWorkPattern(TimPersonCalendarServiceEJB.java:140)
</pre>
In fact I have this setup:
<pre>
workpattern 1..n workpatternday -| 1..n dayperiod
| 1..n daycoreperiod
</pre>
And before 'ejbRemove'ing the workpattern I first remove the days and before that the periods and core periods.
I start with the periods and instead of removing them in the DB he tries to update the FK to the day with '' (p6spy result).
When I remove the not null constraint on the foreign key everything passes to the day where the workpatternId cannot be set to null.
He does not throw errors on the coreperiod (where the not null constraint to day is still present).
When I invert the sequence of deleting
(first the core periods then the 'regular' periods) he complains about the dayId on the core periods table.
So it's completely absurd :S
I hope weblogic 8.1 might solve this problem as this development code is still to be migrated to 8.1 before going in production...
I would just like to know what's wrong. There are other places with just about the same relationships (CMR and DB) where he does not complain...

CMP Entity Bean's problem with MS-SQL Server 2000

Hi everyone!
I have a problem regarding CMP Entity Bean on OC4J.
I made one CMP Entity Bean and deployed it to OC4J.
It was successful.
I used MS-SQL Server 2000 as Datasource.
So, I installed MS-SQL Server's JDBC Driver and add some jar files to classpath.
And I updated 'data-sources.xml' in OC4J's config directory.
Then, I updated also 'orion-ejb-jar.xml' in my application's directory.
I changed data-source's name to my data-source's name which use MS-SQL Server 2000.
Finally, I started OC4J and EJB Client program which called Enitiy Bean's create method.
But, The error occured which was 'Database error: java.sql.SQLException: [Microsoft][SQLServer 2000 Driver for JDBC][SQLServer]LINE 1: '.' Wrong sentence'.
What's wrong? I need any helps.
Here is stack overflow message. Thank you. Best regards.
com.evermind.server.rmi.OrionRemoteException: Transaction was rolled back: Database error: java.sql.SQLException: [Microsoft][SQLServer 2000 Driver for JDBC][SQLServer]LINE 1: '.' Wrong sentence.
     at UserHome_EntityHomeWrapper2.create(UserHome_EntityHomeWrapper2.java:1114)
     at java.lang.reflect.Method.invoke(Native Method)
     at com.evermind.server.rmi.RMICallHandler.run(RMICallHandler.java:80)
     at com.evermind.util.ThreadPoolThread.run(ThreadPoolThread.java:64)
at connection to localhost/127.0.0.1 as admin
     at com.evermind.server.rmi.RMIConnection.EXCEPTION_ORIGINATES_FROM_THE_REMOTE_SERVER(RMIConnection.java:1530)
     at com.evermind.server.rmi.RMIConnection.invokeMethod(RMIConnection.java:1453)
     at com.evermind.server.rmi.RemoteInvocationHandler.invoke(RemoteInvocationHandler.java:53)
     at com.evermind.server.rmi.RecoverableRemoteInvocationHandler.invoke(RecoverableRemoteInvocationHandler.java:22)
     at __Proxy0.create(Unknown Source)
     at com.emc.ksc.ejb.user.UserBeanTestClient1.create(UserBeanTestClient1.java:73)
     at com.emc.ksc.ejb.user.UserBeanTestClient1.<init>(UserBeanTestClient1.java:49)
     at com.emc.ksc.ejb.user.UserBeanTestClient1.main(UserBeanTestClient1.java:1077)

Hi Young,
From the information you have supplied, my guess is that the SQL
string that OC4J is sending to SQL-Server is incorrect. So it may
help if you could see the exact SQL string. In order to see the
SQL string, I suggest you either run OC4J in "debug" mode, or try
using "P6 Spy".
The following web page has details on running OC4J in "debug" mode:
http://kb.atlassian.com/content/atlassian/howto/orionproperties.jsp
And here is the web page for "P6 Spy"
http://www.provision6.com/
And these other web sites may also be of help (in general):
http://www.orionserver.com
http://www.orionsupport.com
http://www.atlassian.com
http://www.elephantwalker.com
Good Luck,
Avi.

Error While Deploying A CMP Entity Bean With A Composite Primary Key

Hello all,
I have a problem deploying CMP Entity beans with composite primary keys. I have a CMP Entity Bean, which contains a composite primary key composed of two local stubs. If you know more about this please respond to my post on the EJB forum (subject: CMP Bean Local Stub as a Field of a Primary Key Class).
In the mean time, can you please tell me what following error message means and how to resolve it? From what I understand it might be a problem with Sun ONE AS 7, but I would like to make sure it's not me doing something wrong.
[05/Jan/2005:12:49:03] WARNING ( 1896):      Validation error in bean CustomerSubscription: The type of non-static field customer of the key class
test.subscription.CustomerSubscriptionCMP_1530383317_JDOState$Oid must be primitive or must implement java.io.Serializable.
     Update the type of the key class field.
     Warning: All primary key columns in primary table CustomerSubscription of the bean corresponding to the generated class test.subscription.CustomerSubscriptionCMP_1530383317_JDOState must be mapped to key fields.
     Map the following primary key columns to key fields: CustomerSubscription.CustomerEmail,CustomerSubscription.SubscriptionType. If you already have fields mapped to these columns, verify that they are key fields.Is it enough that a primary key class be serializable or all fields have to implement Serializable or be a primitive?
Please let me know if you need more information to answer my question.
Thanks.
Nikola

Hi Nikola,
There are several problems with your CMP bean.
1. Fields of a Primary Key Class must be a subset of CMP fields, so yes, they must be either a primitive or a Serializable type.
2. Sun Application Server does not support Primary Key fields of an arbitrary Serializable type (i.e. those that will be stored
as BLOB in the database), but only primitives, Java wrappers, String, and Date/Time types.
Do you try to use stubs instead of relationships or for some other reason?
If it's the former - look at the CMR fields.
If it's the latter, I suggest to store these fields as regular CMP fields and use some other value as the PK. If you prefer that
the CMP container generates the PK values, use the Unknown
PrimaryKey feature.
Regards,
-marina

Error while using sybase trigger with the CMP entity bean,ejb version 2.1

Hi All,
I am using ejb version 2.1 and using entity bean (Transaction required) ,i am trying to update data in sybase(ver 12.3) database table
I am using session bean(Transaction required) to update the multiple entity beans in a while loop.It is working fine .But when i am trying to run it with the trigger which updates multiple tables in different sybase databases on update of each entity.Then it throws NoSuchEntityException and it rollback the whole transaction.
My trigger has only few simple update statements and the trigger runs fine without my CMP entity bean.is the CMP does not support the update triggers in sybase or is it the problem with the transaction.
Please help
Thanks
Anshu

If you can have a look at a cmp example in the samples that ship with the server. My guess is that the weblogic-ejb-jar.xml file is missing the <persistence-use> element which for 810 would look like:
<persistence>
<persistence-use>
<type-identifier>WebLogic_CMP_RDBMS</type-identifier>
<type-version>7.0</type-version>
<type-storage>META-INF/weblogic-cmp-rdbms-jar.xml</type-storage>
</persistence-use>
</persistence>
I seem to recall that the elements might be slightly different in structure for the wls700 version of the DTD, so please check that (I cannot, I'm at home and don't have everything here).
Give that a try and see if it doesn't solve your compilation failure.
Also, the compilation should not be throwing a null pointer exception in a case like that, I consider that to be a bug.
-thorick

Bad Performance/OutOfMemory Error in CMP Entity Bean with Large DB

Hello:
I have an CMP Entity deployed on WLS 7.0
The entity bean maps to a table that has 97,480 records.
It has a finder: findAll() -- SELECT OBJECT(e) FROM Equipment e
I have a JSP client that invokes the findALL()
The performance is very poor ~ 150 seconds just to perform the findAll() - (Benchmark
from within the JSP code)
If more than one simultaneous call is made then I get outOfMemory Error.
WLS is started with max memory of 512MB
EJB is deployed with <max-beans-in-cache>100000</max-beans-in-cache>
(without max-beans-in-cache directive the performance is worse)
Is there any documentation available to help us in deploying CMP Entity Beans
with very large number of records (instances) ?
Any help is greatly appreciated.
Regards
Rajan

Hi
You should use a Select Method, it does support cursors.
Or a Home Select Method combination.
Regards
Thomas
WLS is started with max memory of 512MB
EJB is deployed with <max-beans-in-cache>100000</max-beans-in-cache>>
(without max-beans-in-cache directive the performance is worse)>
Is there any documentation available to help us in deploying CMP
Entity Beans with very large number of records (instances) ? Any help
is greatly appreciated.>
Regards>
Rajan>
>
"Rajan Jena" <[email protected]> schrieb im Newsbeitrag
news:3dadd7d1$[email protected]..
>
Hello:
I have an CMP Entity deployed on WLS 7.0
The entity bean maps to a table that has 97,480 records.
It has a finder: findAll() -- SELECT OBJECT(e) FROM Equipment e
I have a JSP client that invokes the findALL()
The performance is very poor ~ 150 seconds just to perform the findAll() -(Benchmark
from within the JSP code)
If more than one simultaneous call is made then I get outOfMemory Error.
WLS is started with max memory of 512MB
EJB is deployed with <max-beans-in-cache>100000</max-beans-in-cache>
(without max-beans-in-cache directive the performance is worse)
Is there any documentation available to help us in deploying CMP EntityBeans
with very large number of records (instances) ?
Any help is greatly appreciated.
Regards
Rajan

Open jdbc connections with CMP entity beans

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